13x03: The Freeze Up
13x05: Hard Knocks
13x06: Best-Laid Plans
13x07: New Horizons
13x11: Winter Inferno
14x01: Winter's End
14x02: First Blood
14x03: Shock & Awe
14x04: Domino Effect
14x05: Bear Scare
14x06: New Country
14x07: Beware the Wild
14x08: The New World
15x01: Brink of Winter
15x02: Life & Death
15x03: Taking Chances
15x04: The Other Side
15x05: Into the Night
15x06: Bone Cold
